在矿井火灾灾变时期，井巷可通行性主要根据巷道内是否具有高温有毒有害气体而确定。

Fire hazard travel ability of shaft and roadway mainly depends on whether or not there are high temperature toxic gases in the roadway conditions.

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每一个社会的现在，或过去，都存在着可通行的社会礼仪及其行为的唯一性的方方面面。

Every society that is, or ever was, has had unique facets of acceptable social courtesy and conduct.

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